Question

“First meiotic division (reduction or heterotypic division)” what does the word ‘reduction’ refer to in this statement?

Answer 1

Hint: Meiosis takes place in two parts, you have to explain the first part completely. The first process of meiosis starts with the separation of the homologous chromosomes to become the halve of the chromosome number that means the reduction of diploid to haploid.

Complete answer:
In the case of the first meiotic division, the chromosome number gets reduced from the diploid stage that means 46 chromosomes to the haploid condition that means 23 chromosomes condition. This whole process is called the first meiotic division. Here the word reduction is referred to as the number of the chromosomes, which become halved in case of meiotic division.

Additional Information:
The process by which the sex gametes are made is called meiosis. It involves the reduction division, which results in the four genetically different haploid nuclei. In meiosis, two types of the process take place which results in the formation of sex gametes in reproductive organs.
The first process of meiosis starts with the separation of the homologous chromosomes to become the halve of the chromosome number that means the reduction of diploid to haploid.
Then the second process took place where the separation of the sister chromatids is done that was created by the replication of DNA during interphase.
When there is any type of mistake or error during the process of meiosis occurs, there can be developmental disabilities and the most miscarriage occurs due to this error only.
Meiosis was the first time discovered in the sea urchin eggs in 1876. The scientist who discovered this process was Oscar Hertwig.

Note: Meiosis is a special type of cell division which is seen in the case of sexually reproducing animals, in this type of division, there is a formation of gametes such as egg cells and sperm cells. In this type of cell division basically, there are two types of stages involved, or can be said it is a two-round process. In this first round is the main round of where the reduction occurs. This cell division results in the formation of four cells and one copy of each chromosome which is haploid.